volume 44 issue 2 (june 2010) : 104 - 111
GxE INTERACTION, ADAPTABILITY AND YIELD STABILITY OF MID-EARLY RICE GENOTYPES
1Department of Plant Breeding and Genetics,
Orissa University of Agriculture and Technology, Bhubaneswar – 751 003, India
Published In
Indian Journal of Agricultural Research
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volume 44 issue 2 (june 2010) : 104 - 111
GxE INTERACTION, ADAPTABILITY AND YIELD STABILITY OF MID-EARLY RICE GENOTYPES
1Department of Plant Breeding and Genetics,
Orissa University of Agriculture and Technology, Bhubaneswar – 751 003, India
ABSTRACT
Multilocation yield trials of 11 mid-early (110-125 days) rice genotypes were conducted at
Bhubaneswar, Chiplima, Jeypore and Ranital over 3 years 2003-2005, during kharif season.
ANOVA of yield data of the 12 environments revealed highly significant differences among
genotypes and environments and significant GxE interaction indicated differential performance
of genotypes over environments. Considering mean, and the Linear Regression parameters b and
S2
d values jointly, 3 of the 6 genotypes giving above average yield showed stability of performance
of which Lalat showed adaptability to all environments, while OR 2200-5 and Konark showed
specific adaptation to rich environment. Stability assessment on the basis of parameters like CV,
SF, R1, R2, W and ASV revealed that the genotypes OR 1929-4, Lalat, OR 1739-47 and Bhoi
showed stability of yield performance according to 6 or 5 parameters. AMMI (Additive Main and
Multiplicative Interaction) analysis showed differential performance of the genotypes in the 4
locations and of the 6 higher yielding genotypes, Lalat, OR 2200-5 and OR 1976-11 had low GxL
interaction, while OR 2006-12, OR 2172-7 and Konark had high G´L interaction. AMMI-predicted
yield showed that Lalat and OR 2006-12 were high yielder and possessed broad adaptation to
most locations. Genotypes showing good adaptation to specific locations were OR 2200-5 for
Ranital, OR 2172-7 and OR 1916-19 for Bhubaneswar, OR 1976-11 for Chiplima and Konark for
Ranital.
Bhubaneswar, Chiplima, Jeypore and Ranital over 3 years 2003-2005, during kharif season.
ANOVA of yield data of the 12 environments revealed highly significant differences among
genotypes and environments and significant GxE interaction indicated differential performance
of genotypes over environments. Considering mean, and the Linear Regression parameters b and
S2
d values jointly, 3 of the 6 genotypes giving above average yield showed stability of performance
of which Lalat showed adaptability to all environments, while OR 2200-5 and Konark showed
specific adaptation to rich environment. Stability assessment on the basis of parameters like CV,
SF, R1, R2, W and ASV revealed that the genotypes OR 1929-4, Lalat, OR 1739-47 and Bhoi
showed stability of yield performance according to 6 or 5 parameters. AMMI (Additive Main and
Multiplicative Interaction) analysis showed differential performance of the genotypes in the 4
locations and of the 6 higher yielding genotypes, Lalat, OR 2200-5 and OR 1976-11 had low GxL
interaction, while OR 2006-12, OR 2172-7 and Konark had high G´L interaction. AMMI-predicted
yield showed that Lalat and OR 2006-12 were high yielder and possessed broad adaptation to
most locations. Genotypes showing good adaptation to specific locations were OR 2200-5 for
Ranital, OR 2172-7 and OR 1916-19 for Bhubaneswar, OR 1976-11 for Chiplima and Konark for
Ranital.
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In this Article
APC
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Published In
Indian Journal of Agricultural Research